James j



I (NoModqL) J. J. FEARON.

CUTTING GAGE FOR PACKING.

563,579, Patented July 7, 1896.

Ira/entanm: nonms runs :0. Pnmaum msnmcron D c UNITED; STATES PATENTOFFICE.

JAMES J, FEARON, or PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO oHARLEs A.vDANIEL, OF SAME PLACE.

CUTTING-GAGE FOR PACKING.

SPECIFICATION forming part of Letters PatentNo. 563,579, dated July 7,1896. Application filed June 10, 1895. Serial No. 552,252. (No model.)

To all whom it may concern:

Be it known that I, JAMES J. FEARON, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented a Cutting Gage forPacking, of which the following is a specification.

The object of my invention is to provide a simple and efiicient devicefor facilitating the cutting of strips of packing into proper lengthsfor application to any desired diameter of rod piston or plunger, anobject which I attain in the manner hereinafter set forth, referencebeing had to the accompanying drawings, in which- Figure 1 is aperspective View of a cuttinggage for packing made in accordance with myinvention. Fig. 2 is a transverse section of the gage on a larger scale.Figs. 3, 4, and 5 are perspective views on a smaller scale than Fig. 1and showing extensible gages constructed in accordance with myinvention; and Fig. 6 is a rear view of'part of the gage, illustrating ameans of adjusting the angle of that end of the same which constitutesthe cutting-guide.

The device shown in Figs. 1 and 2 consists of a trough-like receptaclehaving sides a a at right angles to each other, one end of the side abeing beveled at an angle of forty-five degrees, as shown at a inFig. 1. The inner face of one of the sides of the trough, say, forinstance, the side a, is graduated, as shown in Fig. 1, the graduationsbeginning at some distance from the beveled end of said side a and beingnumbered to indicate the diameter of the rod or piston, which will beprop erly surrounded by a strip of packing of a length equal to thedistance between the beveled end of the side a and the graduation. Thusthe scale shown in Fig. 1 is graduated for rods of a diameter of fromone to four inches, the successive graduations representing differencesof one-fourth of an inch in the diameter of the rod.

It will be understood that the graduations of the scale are 3.14.16times the size of the graduations of an .ordinary scale, so as to bearto the latter the same relation that the circumference of a circle bearsto its diameter.

The beveled end of the side a of the trough constitutes a guide for theknife in cutting the ends of the strip, so as to form alap-j'oint whensaid strip is bent around the rod, the zero-graduation being formedmidway of the beveled end of the side a to indicate the length of striprequired when the ends are to abut instead of overlapping.

In Fig. 2 a well-known form of packing is shown by dotted lines appliedto the gage in position for being cut.

\Vhen the gage is intended for use in preparing packing for rods oflarge diameter, it is preferable to furnish the trough-shape gage withextension-strips, which may be either sliding strips, such as shown, forinstance, at b b in Fig. 3, or hinged strips,

such as shown, for instance, at d cl in Fig.

4. The sliding strip 1) has ears ff embracing the edges of the sides a aof the troughshaped section of the gage, and other cars g g embracingthe edges of the sliding strip 6, separation of the strip 1) fromthe'section a a being prevented by means of a stop-lug t on the latter,and separation of the strip b from the strip 1) being prevented by meansof a lug or lugs 13. The strip d is pivotally connected to the end ofthe side a of the trough-shaped section of the gage by means of a' pinor rivet m, and the sections (I dare likewise pivoted together by meansof a pin or rivet m. The extension may also, if desired, be in the formof a flexible tape at, connected to the main gage, and, if desired,mounted on a springroller contained in a casing '17. in the ordinarymanner, as shown, for instance, in Fig. 5, and a plain flat strip may insome cases be used instead of the trough-shapedstrip, although thelatter is preferred.

In some cases the gage may have a graduated quadrant pivoted at the end,as shown, for instance, at p in Fig. 6, this quadrant being slotted andconfined by a thumb-screw, so that it can be adjusted to vary the angleof the end of the gage to accord with the desired angle of the lap-jointin the packing.

Having thus described my invention, '1 claim and desire to secure byLetters Patcut-- 1. The within -described cutting-gage for packing, saidgage consisting of a strip havuring-scale as the circumference of acircle bears to its diameter, said strip being beveled at one end andhaving a graduation midway of said bevel, whereby the strip is adaptedfor cutting packing with either lapped or butted ends, substantially asspecified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES J. FEARON.

Witnesses:

FRANK E. BECHTOLD, .Tos. I-I. KLEIN.

